DE102004049587A1 - Auxiliary Power Unit for road vehicle has fuel cell running on synthesis gas and process air and has water cooling and has exhaust gas fed through valve to building block containing catalytic converter - Google Patents
Auxiliary Power Unit for road vehicle has fuel cell running on synthesis gas and process air and has water cooling and has exhaust gas fed through valve to building block containing catalytic converter Download PDFInfo
- Publication number
- DE102004049587A1 DE102004049587A1 DE102004049587A DE102004049587A DE102004049587A1 DE 102004049587 A1 DE102004049587 A1 DE 102004049587A1 DE 102004049587 A DE102004049587 A DE 102004049587A DE 102004049587 A DE102004049587 A DE 102004049587A DE 102004049587 A1 DE102004049587 A1 DE 102004049587A1
- Authority
- DE
- Germany
- Prior art keywords
- exhaust gas
- fuel cell
- valve
- power unit
- auxiliary power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
- H01M8/0662—Treatment of gaseous reactants or gaseous residues, e.g. cleaning
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04014—Heat exchange using gaseous fluids; Heat exchange by combustion of reactants
- H01M8/04022—Heating by combustion
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zur Aufbereitung der Abgase eines in einem Kraftfahrzeug als Stromerzeuger eingesetzten Brennstoffzellensystems, umfassend einen Wärmetauscher und eine Abgasnachbehandlungseinrichtung (Abgas-Katalysator und/oder Partikelfilter).The The invention relates to a device for the treatment of the exhaust gases a fuel cell system used as a power generator in a motor vehicle, comprising a heat exchanger and an exhaust aftertreatment device (exhaust gas catalyst and / or Particulate Filter).
In Kraftfahrzeugen der Zukunft werden zunehmend als APU (auxiliary power unit) bezeichnete Energiewandler Verwendung finden. Diese Energiewandler zeichnet aus, daß sie unabhängig vom Betriebsmodus des Verbrennungsmotors elektrische und thermische Leistung zur Verfügung stellen können. Derartige Energiewandler können insbesondere bei Kraftfahrzeugen mit selbsttätiger Motorabschaltung zu einem wesentlichen Bestandteil des Energiekonzepts werden. Da der Generator bei abgeschaltetem Verbrennungsmotor nicht angetrieben wird, müssen elektrische Verbraucher von der Batterie gespeist werden, was eine entsprechend hohe Kapazität der Batterie erfordert.In Motor vehicles of the future are increasingly used as APU (auxiliary power unit) designated energy converters are used. These Energy converter stands out that she independently from the operating mode of the internal combustion engine electrical and thermal Power available can make. Such energy converters can especially in motor vehicles with automatic engine shutdown to a essential part of the energy concept. Because the generator is not driven when the internal combustion engine, electrical Consumers are powered by the battery, which is a corresponding high capacity the battery requires.
Wegen des hohen Wirkungsgrades ist eine Brennstoffzelle als APU zur Stromerzeugung besonders geeignet. Derartige Brennstoffzellen benutzen bei monovalentem Betrieb (d. h. es ist nur ein Kraftstoff an Bord) als Energieträger ein Wasserstoff- und Kohlenmonoxid enthaltendes Synthesegas, das mit einem Reformer aus dem Kraftstoff gewonnen wird, der auch dem Verbrennungsmotor zugeführt wird. Bei der in der Brennstoffzelle erfolgenden elektrochemischen Reaktion wird das Synthesegas mit Luftsauerstoff oxidiert, und es wird Wasser und Kohlendioxid gebildet, wobei Wärme und elektrische Leistung entstehen. Die Oxidation des Synthesegases ist aber nur unvollständig, so daß in dem aus der Brennstoffzelle austretenden Abgas noch brennbare Bestandteile, wie z. B. Kohlenmonoxid oder Wasserstoff oder Methan enthalten ist. Diese brennbaren Bestandteile müssen aufgrund von gesetzlichen Forderungen in einer Nachverbrennungsstufe zu Verbrennungsprodukten Wasser und Kohlendioxid umgesetzt werden. Bei nicht vollständiger Umsetzung (physikalischer Prozeß) kann das so entstandene Abgas jedoch immer noch Emissionen (Stickoxide, Kohlenwasserstoffe, Kohlenmonoxid, Partikel) enthalten. Aus diesem Grund fordern die Umweltbehörden in manchen Ländern eine Nachbehandlung des Abgases.Because of the high efficiency is a fuel cell as an APU for power generation particularly suitable. Such fuel cells use monovalent Operation (that is, there is only one fuel on board) as an energy source Hydrogen and carbon monoxide containing synthesis gas, which with a Reformer is derived from the fuel, which is also the internal combustion engine supplied becomes. In the taking place in the fuel cell electrochemical Reaction, the synthesis gas is oxidized with atmospheric oxygen, and it Water and carbon dioxide are formed, using heat and electrical power arise. The oxidation of the synthesis gas is only incomplete, so that in the exhaust gas emerging from the fuel cell still combustible constituents, such as As carbon monoxide or hydrogen or methane is contained. These combustible ingredients need due to legal requirements in a post-combustion stage be converted to combustion products of water and carbon dioxide. at not more complete Implementation (physical process) however, the resulting exhaust still produces emissions (nitrogen oxides, Hydrocarbons, carbon monoxide, particles). For this Reason the environmental authorities demand in some countries a post-treatment of the exhaust gas.
Da die Temperatur des Abgases der Brennstoffzelle in bestimmten Betriebspunkten über dem in manchen Ländern vorgeschriebenen Grenzwert (z. B. 400°C beim sog. Grasbrandtest) liegen kann, kann eine Kühlung erforderlich werden. Die in dem heißen Abgas enthaltene Wärmeenergie wird vorzugsweise mit einem Wärmetauscher entzogen. Die dem Abgas entzogene Wärme kann in der Folge genutzt werden, beispielsweise zum Heizen des Fahrgastinnenraums. Da der Verbrennungsmotor im abgeschalteten Zustand keine Wärme erzeugt, kann die dem Abgas der Brennstoffzelle entzogene Abwärme auch benutzt werden, um den Verbrennungsmotor und/oder das Kühlwasser und/oder das Getriebeöl vorzuwärmen.There the temperature of the exhaust gas of the fuel cell in certain operating points above the in some countries prescribed limit value (eg 400 ° C during the so-called grass fire test) can, can a cooling be required. The heat energy contained in the hot exhaust gas is preferably with a heat exchanger withdrawn. The heat extracted from the exhaust gas can be used in the sequence be, for example, for heating the passenger compartment. Since the Internal combustion engine does not generate heat when switched off The exhaust heat of the fuel cell extracted heat can also be used to preheat the engine and / or the cooling water and / or the transmission oil.
Beim Austritt des Abgases aus der Brennstoffzelle kommt es auch zu einer Geräuschentwicklung, die insbesondere im Stillstand des Fahrzeugs bei abgeschaltetem Verbrennungsmotors störend in Erscheinung tritt.At the Escape of the exhaust gas from the fuel cell, it also comes to a Noise, the particular at standstill of the vehicle when switched off Combustion engine disturbing appears in appearance.
Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung der eingangs genannten Art zu schaffen, die bei niedrigen Herstellungskosten und geringem Platzbedarf eine Rückgewinnung der in dem Abgas enthaltenen Wärmeenergie, eine Umwandlung oder Rückhaltung der in dem Abgas enthaltenen schädlichen Stoffe und zugleich eine Verringerung der Schallemission ermöglicht.Of the Invention is the object of a device of the initially mentioned type, which at low cost and a small footprint a recovery the heat energy contained in the exhaust gas, a transformation or retention the harmful contained in the exhaust gas Substances and at the same time a reduction of the acoustic emission allows.
Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß der Wärmetauscher und die Abgasnachbehandlungseinrichtung zu einer Baueinheit zusammengefaßt sind, die als Schalldämpfer und/oder Schalldämmer ausgebildet ist. Diese Baueinheit erfüllt somit eine dreifache Funktion, indem sie gleichzeitig der Wärmerückgewinnung, der Nachbehandlung des Abgases und zur Verringerung der Schallemission dient.According to the invention this Task solved by that the heat exchangers and the exhaust aftertreatment device are combined to form a structural unit, as a silencer and / or Schalldämmer is trained. This unit thus fulfills a threefold function, while at the same time recovering heat, the post-treatment of the exhaust gas and to reduce the noise emission serves.
Die Erfindung wird nachfolgend anhand eines Ausführungsbeispiels näher erläutert.The Invention will be explained in more detail with reference to an embodiment.
In
der einzigen Figur der Zeichnung ist ein von einer Brennstoffzelle
gebildetes APU-System schematisch dargestellt. Eine Brennstoffzelle
Der
in der Baueinheit
Dadurch,
daß die
Baueinheit
Für den Fall,
daß dem
aus der Brennstoffzelle
- 11
- Brennstoffzellefuel cell
- 22
- ProzeßluftversorgungProcess air supply
- 33
- Baueinheitunit
- 44
- VentilValve
- 55
- SynthesegasleitungSynthesis gas line
- 66
- Luftleitungair line
- 77
- Wasserleitungwater pipe
- 8a8a
- Abgasleitung (heiß)exhaust pipe (hot)
- 8b8b
- Abgasleitung (kalt)exhaust pipe (cold)
- 8c8c
- Umgehungsleitungbypass line
- 9a9a
- Wasserleitung (kalt)water pipe (cold)
- 9b9b
- Wasserleitung (warm)water pipe (warm)
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004049587A DE102004049587A1 (en) | 2004-10-12 | 2004-10-12 | Auxiliary Power Unit for road vehicle has fuel cell running on synthesis gas and process air and has water cooling and has exhaust gas fed through valve to building block containing catalytic converter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004049587A DE102004049587A1 (en) | 2004-10-12 | 2004-10-12 | Auxiliary Power Unit for road vehicle has fuel cell running on synthesis gas and process air and has water cooling and has exhaust gas fed through valve to building block containing catalytic converter |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102004049587A1 true DE102004049587A1 (en) | 2006-04-13 |
Family
ID=36088898
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102004049587A Withdrawn DE102004049587A1 (en) | 2004-10-12 | 2004-10-12 | Auxiliary Power Unit for road vehicle has fuel cell running on synthesis gas and process air and has water cooling and has exhaust gas fed through valve to building block containing catalytic converter |
Country Status (1)
Country | Link |
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DE (1) | DE102004049587A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008057839A1 (en) | 2008-11-19 | 2010-05-20 | Torsten Enders | Method for withdrawal of large energy quantity from gaseous medium during thermal isolation and reduction of sound and pollutant e.g. nitrogen oxide, emissions in motor vehicle, involves working exchanger in defined thermodynamic stages |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10034556A1 (en) * | 2000-07-15 | 2002-01-24 | Eberspaecher J Gmbh & Co | Engine exhaust system |
EP1097338B1 (en) * | 1998-07-20 | 2002-05-02 | Etis Ag | Insulation, insulation method and exhaust gas piping system |
EP1479883A1 (en) * | 2003-05-10 | 2004-11-24 | Universität Stuttgart | Method and device for exhaust gas purification |
-
2004
- 2004-10-12 DE DE102004049587A patent/DE102004049587A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1097338B1 (en) * | 1998-07-20 | 2002-05-02 | Etis Ag | Insulation, insulation method and exhaust gas piping system |
DE10034556A1 (en) * | 2000-07-15 | 2002-01-24 | Eberspaecher J Gmbh & Co | Engine exhaust system |
EP1479883A1 (en) * | 2003-05-10 | 2004-11-24 | Universität Stuttgart | Method and device for exhaust gas purification |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008057839A1 (en) | 2008-11-19 | 2010-05-20 | Torsten Enders | Method for withdrawal of large energy quantity from gaseous medium during thermal isolation and reduction of sound and pollutant e.g. nitrogen oxide, emissions in motor vehicle, involves working exchanger in defined thermodynamic stages |
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OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
R012 | Request for examination validly filed |
Effective date: 20110924 |
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R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20140501 |